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TLV5623C, TLV5623I 2.7ĆV TO 5.5ĆV LOW POWER 8ĆBIT DIGITALĆTOĆANALOG
CONVERTERS WITH POWER DOWN SLAS231B − JUNE 1999 − REVISED APRIL 2004
D 8-Bit Voltage Output DAC D Programmable Settling Time vs Power
Consumption 3 µs in Fast Mode 9 µs in Slow Mode
D Ultra Low Power Consumption:
900 µW Typ in Slow Mode at 3 V 2.1 mW Typ in Fast Mode at 3 V
D Differential Nonlinearity . . . <0.2 LSB D Compatible With TMS320 and SPI Serial
Ports
D Power-Down Mode
D Buffered High-Impedance Reference Input D Monotonic Over Temperature D Available in MSOP Package
applications
D Digital Servo Control Loops D Digital Offset and Gain Adjustment D Industrial Process Control D Machine and Motion Control Devices D Mass Storage Devices
description
The TLV5623 is a 8-bit voltage output digital-toanalog converter (DAC) with a flexible 4-wire serial interface. The 4-wire serial interface allows glueless interface to TMS320, SPI, QSPI, and Microwire serial ports. The TLV5623 is programmed with a 16-bit serial string containing 4 control and 8 data bits. Developed for a wide range of supply voltages, the TLV5623 can operate from 2.7 V to 5.5 V.
D OR DGK PACKAGE (TOP VIEW)
DIN 1 SCLK 2
CS 3 FS 4
8 VDD 7 OUT 6 REFIN 5 AGND
The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class AB output stage to improve stability and reduce settling time. The settling time of the DAC is programmable to allow the designer to optimize speed versus power dissipation. The settling time is chosen by the control bits within the 16-bit serial input string. A high-impedance buffer is integrated on the REFIN terminal to reduce the need for a low source impedance drive to the terminal.
Implemented with a CMOS process, the TLV5623 is designed for single supply operation from 2.7 V to 5.5 V. The device is available in an 8-terminal SOIC package. The TLV5623C is characterized for operation from 0°C to 70°C. The TLV5623I is characterized for operation from − 40°C to 85°C.
AVAILABLE OPTIONS
PACKAGE
TA
SMALL OUTLINE†
MSOP
(D)
(DGK)
0°C to 70°C
TLV5623CD
TLV5623CDGK
−40°C to 85°C
TLV5623ID
TLV5623IDGK
† Available in tape and reel as the TLV5623CDR and the TLV5623IDR
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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TLV5623C, TLV5623I 2.7ĆV TO 5.5ĆV LOW POWER 8ĆBIT DIGITALĆTOĆANALOG CONVERTERS WITH POWER DOWN
SLAS231B − JUNE 1999 − REVISED APRIL 2004
functional block diagram
_
6
REFIN
+
1 DIN
2 SCLK
3 CS
4 FS
Serial Input
10
Register
16 Cycle Timer
Update
8
8-Bit
Data
8
Latch
x2
7 OUT
Power-On Reset
2
Speed/Power-Down Logic
Terminal Functions
TERMINAL
NAME NO.
AGND
5
CS
3
DIN
1
FS
4
OUT
7
REFIN
6
SCLK
2
VDD
8
I/O
DESCRIPTION
Analog ground I Chip select. Digital input used to enable and disable inputs, active low. I Serial digital data input I Frame sync. Digital input used for 4-wire serial interfaces such as the TMS320 DSP interface. O DAC analog output I Reference analog input voltage I Serial digital clock input
Positive power supply
2
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TLV5623C, TLV5623I 2.7ĆV TO 5.5ĆV LOW POWER 8ĆBIT DIGITALĆTOĆANALOG
CONVERTERS WITH POWER DOWN SLAS231B − JUNE 1999 − REVISED APRIL 2004
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage (VDD to AGND) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Reference input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to VDD + 0.3 V Digital input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . − 0.3 V to VDD + 0.3 V Operating free-air temperature range, TA: TLV5623C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
TLV5623I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any ot.